fork download
copy 
  1. #include <iostream>
  2. #include <algorithm>
  3. #include <vector>
  4.  
  5. int main()
  6. {
  7.     std::vector<int> v{1, 2, 2, 2, 3, 3, 2, 2, 1};
  8.     std::vector<int>::iterator last;
  9.  
  10.     last = std::unique(v.begin(), v.end()); // 1 2 3 2 1 3 2 2 1
  11.     //           ^
  12.     for (std::vector<int>::iterator it = v.begin(); it != last; ++it) {
  13.         std::cout << *it << " ";
  14.     }
  15.     std::cout << "\n";
  16. }
Success #stdin #stdout 0s 3228KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1 2 3 2 1
https://ideone.com/gLyemr
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!